Melbourne have denied claims Heritier Lumumba is considering legal action against the club as he weighs up his AFL future.Lumumba looks certain to have played his final game for Melbourne and is likely to retire amid a dispute over the Demons handling of his concussion.The 2010 All-Australian defender claims Melbourne stopped him playing this season when he felt he had recovered from his concussion problems.Lumumba, who has just finished the second year of a three-year deal with Melbourne, concussed himself in round six and went on to suffer another knock to the head in his comeback game several weeks later in the VFL.The 30-year-old claims his lack of opportunities this season - playing just five games in total - meant he could not use a trigger clause in his contract for a fourth year.But Melbourne on Thursday were confident Lumumba would not pursue legal action.Heritier and the club are currently investigating issues associated with Heritiers health, to determine his ongoing playing future with the club, Demons football manager Josh Mahoney said.Contrary to media reports, Heritier has not threatened legal action against the club.We ask media to refrain from further speculation on Heritiers health while he seeks the necessary information to make an informed decision on his playing career.Lumumba, a premiership player with Collingwood in 2010, has sought further medical advice and has been in contact with the AFL Players Association as he considers his next move.The Demons are adamant they had handled the situation appropriately, and defender Bernie Vince on Thursday questioned whether Lumumba would have earned another game even if he had been cleared to play.Its real messy - how do you prove that he didnt play because of his head or he wasnt selected? Vince told Nova 100 radio.The doctors take a more precautionary side of things with head knocks and they leave you out for an extra week or an extra couple of weeks just to be careful, so for him to say they didnt treat it right was a bit disappointing.We think that weve got the best medicos in the comp. Theyre very cautious on that issue.I dont know the full ins and outs and Im not sure if hes retiring or not. It looks like he is.Demons coach Simon Goodwin earlier this month said Lumumba had been cleared of his symptoms and was poised to return to training.One of the AFLs most-enigmatic characters, Lumumba has played 223 senior games - 199 for the Magpies and 24 at Melbourne.AFL chief Gillon McLachlan on Thursday said he was comfortable with existing concussion protocols, adding that the league was investing significant money in concussion research.Basketball Jerseys Black Friday . 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Despite the loss, it was a remarkable show by the confident Swedish challenger, who had the best of the early rounds and then hung on in the fourth and fifth.North Melbournes best form had better be in front of them, because their AFL season of great expectations has ground to a halt.Kangaroos coach Brad Scott remained upbeat about their prospects after Sundays 32-point loss to West Coast at Subiaco.It meant they have lost five of their last six games and plummeted from top spot on the AFL ladder to eighth.Scott said they had to rediscover their best form and regain players from injury.Our best footy is in front of us, he said.We have played some really good football this year and we have had some challenges put in front of us. Some challenges we havent been able to overcome.We have played four pretty good teams in the past month (Geelong, Hawthorn, Adelaide, Eagles) and really I didnt walk away discouraged that our best wasnt good enough to win those games.Indeed, their situation is not catastrophic - yet.Norths nine-game winning streak at the start of the season means they are only one game plus percentage outside the top four.And the Kangaroos have a three-game buffer over Port Adelaide, Collingwood Melbourne and St Kilda, who will need a lot to go right if any of them are to push for the finals.But of Norths 10 wins this season, only two have been against other teams currently in the top eight.Their form slump makes next Saturdays home game against the resurgent Power a big clash.The Eagles 16.8 (104) to 11.6 (72) win was their first thiis year against another top eight team.ddddddddddddWest Coast improved from eighth to fifth, leaving them just one win adrift of second.Also on Sunday, Adelaide extended their winning streak to seven with a regulation 10-goal win over Carlton at the MCG.The 16.11 (107) to 7.5 (47) win sent the Crows rocketing from fifth to third.Across town, St Kildas four-goal run in the last quarter meant they survived a scare against lowly Essendon and won by 11 points.Jack Steven was supreme for the Saints in the 17.7 (109) to 14.14 (98) win.Geelong and GWS were the big losers in round 16, with the Cats falling at home to Sydney on Friday night by 38 points.As Geelong dropped out of the top four, Sydney replaced them in second spot and set up a ripping clash next Thursday night against top side Hawthorn at the SCG.The Giants were also ordinary at home, falling to the Magpies by 32 points to drop from third to seventh.Richmond gave the Western Bulldogs an almighty scare on Saturday night, but the Dogs won ugly by 10 points to improve from sixth to fourth.Only two games separate top side Hawthorn from North in eighth.The Hawks beat Port Adelaide on Thursday night by 22 points in a rugged clash.Melbourne beat Fremantle in Darwin and Gold Coast won the Q Clash over Brisbane. 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